I'd probably agree the bulk of indier-than-thou creations are produced by people on the left (not all of whom demand we also bow to their political interpretation of the world); some of the work excellent, most of it perhaps not.
People have said it in the thread, but counter-culture is really defined retrospectively. You look at the movements that existed on the periphery but later inspired the mainstream. Velvet Underground wasn't selling millions of records, but everyone who started a band listened to them. Lou Reed is pretty indier than thou.
Yeah, but Youtube is mainstream now; it comes installed on almost every single consumer TV available for sale right now. You don't get more mainstream than that.
If you wanted to see counterculture, you'd have to use the youtube alternatives.